American Airlines Flight 11 takes off from Boston bound for Los Angeles.
United Airlines Flight 175 takes off from Boston bound for Los Angeles.
American Flight 11 crew alerts airline to hijacking.
American Airlines Flight 77 takes off from Washington DC bound for Los Angeles.
FAA notifies North American Aerospace Defense Command and the Northeast Air Defense Sector about suspected hijacking of American Flight 11.
United Airlines Flight 93 takes off from Newark bound for San Francisco.
FAA notifies NORAD about suspected hijacking of United Flight 175.
American Flight 11 crashes into North Tower of World Trade Center.
First news reports that American Airlines Flight 11 has crashed into One World Trade Center (North Tower).
White House Chief of Staff tells US President George W. Bush that a plane has hit the World Trade Center.
Several people on UA Flight 175 manage to contact authorities and loved ones.
UA Flight 175 crashes into Two World Trade Center (South Tower).
President Bush is informed about the second WTC plane crash.
FAA bans all takeoffs nationwide for flights going to or through New York airspace.
Flight attendant and passenger on American Flight 77 contact people on the ground to report hijacking.
FAA closes NYC area airports.
NYC Port Authority closes all bridges and tunnels in NYC.
FAA notifies NORAD about suspected hijacking of American Flight 77.
President Bush calls crashes 'an apparent attack on our country.'
New York Stock Exchange closed.
US Vice President Cheney is evacuated to the Presidential Emergency Operations Center.
American Flight 77 crashes into the Pentagon.
FAA orders all commercial flights grounded.
U.S. Capitol and White House evacuated.
UA Flight 93 passengers and crew have contacted authorities and loved ones after hijacking and are believed to have mounted a counterattack.
Two World Trade Center (South Tower) collapses (note: other sources cite the collapse at 10:03, 10:05, & 10:06).
United Airlines Flight 93 crashes in Somerset County, Pennsylvania (time approximate).
Portion of the Pentagon collapses.
United Nations building evacuates.
State and Justice Departments, and World Bank, evacuated in Washington DC.
FAA reroutes inbound transatlantic flights to land in Canada.
One World Trade Center (North Tower) collapses.
All federal office buildings in Washington DC evacuated.
Police confirm Pennsylvania plane crash.
New York's primary elections postponed.
Israel evacuates diplomatic missions.
New York Governor George Pataki announces closure of all state government offices.
Mayor Rudolph Giuliani urges New Yorkers to stay at home and orders an evacuation of the area south of Canal Street
Los Angeles International Airport evacuated.
US closes some Canada and Mexico border crossings.
New York Mayor Giuliani evacuates Manhattan south of Canal Street.
President Bush says: 'Make no mistake, the United States will hunt down and punish those responsible for these cowardly acts' (note: other sources cite this at 12:36).
State of Emergency declared in Washington DC.
FAA announces suspension of US commercial air traffic until noon EST Wednesday 9/12.
Navy sends missile destroyers to New York and Washington.
President Bush arrives at Strategic Command at Offutt Air Force Base in Nebraska.
CNN National Security Correspondent David Ensor reports there are indications that Osama bin Laden is involved in attacks.
Seven World Trade Center reported to be on fire.
American Stock Exchange, Nasdaq, and New York Stock Exchange announce they will be closed Wednesday, 9/12.
City of New York announces that 200 firefighters and 78 police officers are missing (note: according to other sources, at 7:45 pm the New York Police Department announced that at least 78 police officers were missing and that as many as half (200) of the first firefighters at the scene had been killed.)
Seven World Trade Center building collapses.
Explosions reported in Kabul, Afghanistan (note: other sources cite this for 6 pm).
Press conference by US Defense Secretary Donald Rumsfeld from the Pentagon.
President Bush arrives at the White House (note: other sources say he arrived at 6:54 pm).
President Bush addresses the nation. Search warrants obtained for homes and post office boxes in Florida.